Fireproofing



R. W. LYLE.

PIRBPROOFING.

Patented Sept. 21, 1897.

lllllllllllWllllll Il mi UNITED STATES PATENT OFFICE.

ROBERT IV. LYLE, OF PERTH AMBOY, NEW'JERSEY.

FIREPROOFING.

SPECIFICATION forming part of Letters Patent No. 590,827, datedSeptember 21, 1897.

Application iiled May 4,1897. Serial No. 635,072. (No model.)

To @ZZ whom t may concern,.-

Beit known that I, ROEEET W. LYLE, a citizen of the UnitedStates,residing at Perth Amboy, in the county of Middlesex and State ofNew Jersey, have invented a certain new, useful, and valuableImprovement in Fireproofing, of which the following is a full, clear,and exact description.

My present invention relates to fireprooling, and has for its objects toprovide, first, an improved form of ireproong which is especiallypractical and economical of manufacture; second, to provide a form ofiireprooflng the use of which saves both labor and time in placing inposition between the supportingbeams; third, to provide a form ofiireproon g which is adapted to withstand great strains and heat 5fourth, to provide a form of lintels for iireprooflng which may or maynot be topped with concrete or cement.

To attain these ends, I provide the combination and arrangement of partsillustrated in the accompanying drawings, in which- Figure lis takentransversely of the I-beams supporting my improved fireproof-fiooringand showing side elevation of my lap-jointed lintel. Fig. 2 is a topview of the same lintel, showing how it is cut on the bias. Fig. 3 is anend View of two of my improved lintels. Fig. 4 is an end view showingsix lapjointed lintels having their semicircular upper sectionssurmounted with concrete or cement.

This present invention, while approximating the structural featuresshown and described in my pending applications in the same class, SerialNo. 628,516, filed March 20, 1897, and Serial No. 629,696, filed March29, 1897, and even several prior patents, still differentiates in apatentable degree from all of these, as I will now attempt to show.

Taking up the lintel shown in Figs. l and 2, in which the upper sectionl overhangs the lower section 2, as shown in Fig. 3, which feature isparticularly covered and claimed in my said application, Serial No.629,696, the advantages of such lap-jointed lintels are supplemented inthis case by cutting their ends on a bias, which gives them theimportant advantage of allowing them to be set in place between thestationary I-beams 3 4 without the use of skewbacks or dividingkeys,although in Fig. l I have shownv U- shaped skewbacks 5, encompassing thelower shoulders of the I-beams; but said skewbacks may be readilydispensed with, as is evident by the succeeding figures. Runningtransversely of the upper section l of the lintel shown in Figs. l and 2are grooves 6, which permit of a transfer of air from one lintel toanother, which means of ventilation is advantageous in case of severefires andv extreme heat. l

A modified form of lintel is shown in Fig. 3, wherein the lower section2 is grooved, as at 3, to receive the lower shoulder 7 of the supportingI-beams,thus dispensing with any form of skewback, as this lintel, likeall others shown in this case, is cut on a bias.

The lintels shown in Fig. 4 are of the same general form as those shownin Fig. 3,the main difference being in the semicircular upper section 8ofthe former, which latter may or may not be topped with the concrete orcement 9. 1

' The forms of lintels shown in Figs. 3 and 4 are also provided with theVentilatinggrooves 6.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In a iireproof floor or ceiling, the combination with'suitablesupporting-beams, of a series of hollowA lintels arranged transverselyof and supported by the beams, the ends of said lintels being cut on abias and each end vportion provided with a transverseventilating-groove.

2. In a iireproof floor or ceiling, the combination with suitablesupporting-beams, of a series of hollow rectangular lintels each havingan overhanging hollow arched head extending throughout its length, theends of saidlintels being cut on abias, and supported by the beams.

3. In a reproof floor or ceiling, the combination with suitablesupporting-beams, of a series of hollow rectangular lintels each havingan overhanging hollow arched head eX- tending throughout its length,said lintels and heads being each provided with a transverseVentilating-groove.

In testimony whereof I affix my signature in the presence of twoWitnesses.

ROBERT W. LYLE. lVitnesses:

H. V. WINNE, EDWIN FRENCH, .I r.

IOO

